Grease-cup.



[.NOLAN.

GREASE CUP.

APPLICATION FILED MAR-4.19l5.

Patented Oct. 29, 1918.

ATTORNEYS UNTTED @TATEd PATENT FFTfiE.

EDMUND NOLAN, 015 DETROIT, MICHIGAN, A'SSIGNOR 'IO GEORGE W. BOWEN, OF AUBURN, NEW YORK.

GREASE-CUP.

Specification of Letters Patent.

Patented Oct. 29, 1918.

Application filed March 4, 1915. Serial No. 11,946.

To all whom it may concern:

Be it known that I, EDMUND NOLAN, a citizen of the United States, and a resident of Detroit, in the county of lVayne and State of Michigan, have invented a certain new and useful Grease-Cup, of which the following is a specification.

This invention has for its object a particularly simple and eflicient spring means for holding from relative turning movement two members which are connected together by screw threads, as the base and cap of a grease cup; and the invention consists in the novel features hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawings, in which like characters designate corresponding parts in all the views.

Figure 1 is a vertical sectional view, partly in section, of a grease cup embodying my invention.

Fig. 2 is a plan View of the base with the holding spring therein.

Figs. 3 and at are, respectively, a plan and an edge view of the detached spring.

1 designates the spring located in a circular chamber 2 formed in the base member 3 of a grease cup; 4 is the cap member screwing in the chamber 2.

The spring is here shown as a ring adapted to be sprung into a circular chamber as the chamber 2, said spring being slightly elongated as elliptical in general form, and the long diameter of the ellipse being greater than a diameter of the chamber in which the spring is located and the short diameter thereof being substantially the same or slightly less than the diameter of said chamber. The ring is split at 5 at one end of the ellipse and the portion between the ends of the ellipse is distorted out of the normal plane of the ellipse in order to fit the spring to the'chamber and to increase the resiliency of the spring.

Preferably, a portion of the ring i re-' moved at the split to increase the resiliency and to facilitate the fitting of the spring to the circular socket; and also the ring is distorted by folding the same along its short diameter so that the halves thereof on opposite sides of the fold incline toward the normal plane of the ellipse. The ring is usually formed with corrugations 6 at the fold which corrugations coact with the advance edge of the cap and ratchet into and out of notches 7 therein.

After the spring is formed and before it is placed in the chamber, it is distorted somewhat out of a plane. but is still elongated as seen in Fig. 3, and when sprung into the chamber 2, it is distorted to a greater degree out of a plane, as seen in Fig. 1 and assumes a circular, or nearly a circular, shape s0 that it fits within the chamber 2, and the ends thereof are being constantly pressed snugly against the walls of the chamber. During this pressing operation, the points 8 where the ring is divided tend to dig into the wall of the chamber 3, and as the cap 4 is turned downwardly it tends to flatten the spring causing it to take a tighter grip at the ends of the ellipse against the wall of the chamber 2.

Preferably, the portion of the chamber 2 on which the threads are formed is of less diameter than the portion in which the spring is located so that the spring is located in an undercut channel.

10 is a plunger movable in the cap 2, and 11 is a screw carried by the head of the cap and coacting with the=plunger to move the same vertically as the screw is turned in one direction or the other, the screw 11 having a handle 12 at its outer end above the head of the cap.

This spring is particularly advantageous in that it is economical in manufacture, is easy to assemble in the grease cup, as it requires no fastening means, and is eflicient in operation.

What I claim is 1. The combination of two members, one member being formed with a circular chamber and the other screwing into the chamber, and a spring located in the chamber and being in the form of a ring elliptical in general form and having its longer diameter greater than a diameter of the circular chamber, the ring being sprung in the chamber so that the portion between the ends of the ellipse is distorted out of the normal plane of the ring, so that portions of the ring when sprung into the chamber project toward the cap in position to engage the lower edge of the cap and resist turning of the cap, substantially as and for the purpose described.

a 2. The combination of two members, one

' member being formed with a circular chamher and the other screwing into the chamber, and a spring located in the chamber of one member for coacting with the advance edge of the other member to impositively lock the latter from turning, the spring being in the form of a split ring elliptical in general form, the longer diameter of the ring being greater than a diameter of the circular chamber, and the ring being sprung into said chamber so that the ends of the ellipse bind against opposite walls of the chamber and the portion between the ends of the ellipse being distorted out of the normal plane of the ring, substantially as and for the purpose specified.

8. The combination of two members, one member being formed with a circular chamber and the other screwing into the chamber, and a spring located in the chamber of one member for coaoting with the advance edge of the other member to impositively lock the latter from turning, the spring being in the form of a ring elliptical in general form and split at one end of the ellipse, the longer diameter of the ring being greater that the diameter of the circular chamber, and the ring being sprung into said chamber so that the ends of the ellipse bind against opposite walls of the chamber, the portion between the ends of the ellipse being distorted out of the normal plane of the ring, substantially as and for the purpose set forth.

4. The combination of two members, one member being formed with a chamber and the other screwing into the chamber, and means within the chamber of one member for locking the other member from turning, said means comprising a spring ring fitted within the circumferential wall of said chamber and frictionally held therein by the engagement of said ring with the walls of said chamber the ring being folded along a diameter out of a plane so that opposite portions thereof on opposite sides of the diameter diverge from said fold toward the normal plane of the ring, substantially as and for the purpose described.

5. The combination of two members, one being formed with a chamber and the other member screwing into the chamber, and means within the chamber of one member for locking the other member from turning, said means comprising a spring ring fitted within the circumferential wall of said chamber and frictionally held therein by the engagement of said ring with the walls of said chamber, the ring having the portion thereof between diametrical opposite points bent out of the normal plane of the ring, p ulcilstantially as and for the purpose speci- 1e Gopieq of this patent may be obtained for 6. The combination of two members, one being formed with a chamber and the other member screwing into the chamber, and means within the chamber of one member for locking the other member from turning said means comprising a flat spring ring fitted within the circumferential wall of said chamber, the ring being normally larger than the chamber and folded along a diameter out of a plane whereby portions thereof on opposite sides of the fold diverge from the fold toward the normal plane of the ring, and the ring being formed with corrugations which constitute ratchet teeth coacting with notches in the advance edge of the member screwing into the chamber, substantially m as and for the purpose set forth.

7. The combination of two members, one member being formed with a circular chant ber and the other member screwing into the chamber, and means located in the chamber for coacting with the advance edge of the member screwing thereinto and holding the same from turning, said means including a spring ring elliptical in general outline and divided at one of the, ends of the ellipse, the longer diameter of the ellipse being greater than a diameter of the circular chamber, and the spring being f( ldedalong the short diameter of the ellipse whereby the spring is shortened so that it can be placed into the chamber, the opposite ends of the ellipse binding on the wall of the chamber during the compression of the spring by the member screwing into the chamber, substantially as and for the purpose described.

8. The combination of two members, one men'iber being formed with. a circular chamher and the other nemberscrewing into the chamber, and spring means located in the chamber of one member for holding the other member from turning, said means comprising aring elliptical in general form and having its longer diameter greater than a diameter of the circular chamber, the ring being divided at one end and having a portion thereof removed and the ring being folded along its short diameter whereby the portions between the ends of the ellipse incline from said end toward the fold out of the normal plane of the ring, substantially as and for the purpose specified.

In testimony whereof, I have hereunto signed my name in the presence of two attesting witnesses, at Detroit, in the county of Wayne, in the State of Michigan, this 18th day of January, 1915.

EDMUND NOLAN.

lVitnesses R. E. TANNER, C. J. OvnnToN.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

